Delaying mechanism chiefly applicable to cameras



April 26, 1949- G. A. H. BUGEAUD DELAYING MECHANISM CHIEFLY APPLICABLE TO CAMERAS Filed May 17, 19,47

Inval/tar @man Semilla Riba- Henri lgau d Patented Apr. 26, 1949 2,468,541 oFFlcE DELAYING lVIECHANISM CHIEFLY APPLICABLE TO) CAMERAS.

Georges Albert Henri Bugeaud, Nice, Francel Application May 1.7, 1947, Serial` No..748,?746 In France March 14,1946

Section 1, Public Law/690,' August, 12946 Patent expires March 14, 1966 3 Claims.

The release delaying' mechanism forming the object of my invention may be used each time it. is desired to produce the release of a device or switch of any type whatever with a certain lag.

In the case of its application to the shutter of aphotographic camera, it allows the operator to come in front of the camera when he desires to obtain his own photograph.

In my improved mechanism, a socket capping the apparatus and rigid with a slideway carrying thefmember releasing` the shutter is movable with reference to the body of the mechanism that carries a clockwork starting after the apparatus hasbeen set under the. action of a return spring secured on one hand to said body and on the other hand to. said slideway. The latter is provided with a slot or perforationthrough which may pass a pin carried by oneside of the first gear wheel of the clockwork that is thus started by the thrust exerted by said return spring on the edge of the perforated slideway contacting with said pin. The outline of the perforation includes an active transversal part and a longitudinal part which latter allows the slideway to freely. continue its movement when as al consequence of the rotation of the wheel carrying it, the pin is moved out of contact with the transversal part of said perforation.

I have illustrated diagrammatically in accompanying drawings and merely by way of example aform of execution of such a mechanism as used for releasing the shutter of a photographic camera. In said drawings:

Fig. 1 is a longitudinal cross-section of the mechanism when inoperative and showing the slideway in side view.

Fig. 2 is a part view showing the mechanism as seen from above.

Figs. 3 and 4 are similar views showing the mechanism in its set position.

Fig. 5 shows at a reduced scale the delaying mechnaism mounted on a photographic camera.

Fig. 6 is a perspective view showing the mechanism tted at the end of a yielding control transmission.

The mechanism illustrated may assume the shape of a propelling pencil. Its body 2 serves as. a.N carrier for the delaying means mounted between said lbody serving Las a lower, or inner, plate and an upper, or outer', plate 3 carried by two pillars 4 and 5. These delaying means in- Lcludef a clock-work 6-1-8-9 ending with an anchor wheel I providing for the desired delay. A slidewayll sliding overY the upper plate 3 is guided and held down by the screws I2 and I3.

To -one end I4 of the slideway is securedarod I5* adaptedto producethe releaseV of the shutter, while its other end I6 carries the socket I1 capping and enclosing the mechanism.

A driving spring I8 is. engaged on one hand in the slideway II through a screw I9 and on the other hand it is secured through the screw to a lug 2|v formed on` and at right angles with the body 2.

Said body. 2v isi secured through the tubular screw 22 to the head-piece 23 that is provided with an axial channel 2li` through which may pass the releasing rod I5. The' tapering end 25 of said head-piece 23y is provided with a conical thread 2B that may be, formed on the outer surface of an insert 21.`

The conical threadon said endserves for securing the apparatus directly in the'housing 28 (Fig. 5) generally provided on allcameras such as'29 for controlling'. the shutter through yieldingreleasing means.

The same apparatus provided` with a supple- ,mentary' arrangement".` (Fig. 6:). may besecured tothe end of a flexible1 member 30 as disclosed hereinafter.

The head-piece 23 of the mechanism. is also provided with a knurled flange 3| against `which vmay abut the'outersocket I-'I, said flange serving alsol for holding the mechanism inthe desired locationv on the camera.

The operation of my improved mechanism is as follows:

When drawing out` the socket'l IY'Iv in the direction of the arrow 32', the' slideway II iscarried along thatv is perforat'ed-as'sh'own more particularlyat 33 in Fig. 2;

The iirst wheel 6 of the delaying clock-work carries laterally onthe side Vfacing the slideway I'I a pin v34 extending beyond the upper plate 3 and engaging' the slot 33: of the slideway.

When the slideway II hasreceved in the direction of the arrow 32 '(Figs; l and 2) the part 35 of the slot 33I drivessaid pin v'all'that entersa position 34a (Figs. 3; and' 4). A catch System 31 arranged betweenthewheel 'I mounted loose on the shaft '38 and a-pinion 39'keyed to the same shaft andimeshin'gwith the wheel 6 allows the above referred to return movement of the slideway II and consequently a rotation of the Wheel 6 and pinion 39 without the latter driving the remainder of the delaying clock-work.

When the socket IIis in the set position illustrated inFigs. 3 and'4,.the slideway II is urged backwards under theaction of the driving spring I8'in the direction vofthe arrow 40.

The part 4I of the outline of the slot 33 inthe slideway that hasientered the position shown in Figs. 3 and 4 drives thenthe. pin 34 thatis rigid with the first pinion 6" of: the gear work and drives now the clock-workasa whole.

TheA movement .ofthersl-ideway I I i in Athe direc-- tion of the arrow 40 (Figs. 3 and 4) is thus slowed down by the gear-work of which the speed of rotation is controlled in a manner well known per 'se by the anchor escapement IU; during' this movement the rod I rigid with the slideway II projects more and more beyond the head-piece 23 of the apparatus and provides for the release of the shutter of the camera.

The shape of the slot 33 in the slideway II allows a nondelayed drop at the end of the stroke. As a matter of fact, when by reason of the rotation of the wheel 6, the pin 34 has left the posiv tion 34a, nothing more prevents the sliding of the slideway II so that the latter continues progressing freely in the direction of the arrow 40.

When it is desired to make use of the mechanism, the socket II is drawn out through one hand while the mechanism is held by the other hand through the knurled part 3| of its head piece 23. At the end of its stroke, the socket I'I is slightly rotated in the direction of the arrow`42 `illustrated in Fig. 3 so that the head of the screw 2U that serves simultaneously for securing one end of the spring I8 and for guiding the socket II may move laterally out of the slot 43 and bear at 44 against the end of said socket.

The mechanism being thus set and held through its knurled part 3|, its threaded conical end 26 is screwed into the part 28 (Fig. 5) of the camera 29 adapted to normally receive the member carrying the yielding transmission controlling the shutter.

For producing a release of the shutter, the b socket I'I should be rotated in a direction opposite to that of the arrow 42 (Fig. 3) so as to return the slot 43 in front of the head of the screw 20. The delaying means begins operating and the person using the mechanism has a short time in front of him, say it takes seconds during which he may come into the iield of the camera 29.

The delaying mechanism may also be used with a yielding transmission 30, in which case an intermediary strap-shaped part 45 may be resorted to (Fig. 6).

The flange 46 of said strap carries a sleeve 41 the inner bore of which carries the end of the yielding transmission 3D. The metal part fitting the end of the transmission sheath is locked in side the sleeve 4l under the action of the screw 48.

The other flange 49 of the strap shows at 50 a tapped hole inside which is screwed the threaded end 26 of the head-piece 23 of the apparatus. The rod I5 is thus adapted to urge forward the knob 5i at the end of the yielding transmission 3U for producing the desired release. i

Lastiy the mechanism socket may be provided with a hook 32 through which it may be secured in a pocket of the user after the manner of a fountain pen or propelling pencil.

What I claim is:

1. A control mechanism for the delayed operation of camera shutters and the like comprising a socket, a slider provided with a longitudinal slot extending into a lateral recess at its outer end, said slider being rigid with said socket and a control member for the operation of the camera shutters carried by said slider, a body over which said socket is fitted and provided with an Open end for the passage of the control member, a clock-work including an escapement carried by said body, a spring urging the slider back into its projecting operative position with reference to the body, an eccentric projection carried by one of the gears of the clock-work parallel to the axis thereof and adapted to engage the slot in the slider, to cooperate with the recess therein for damping the progression of the slider with reference to the body under the action of the spring and then to enter the longitudinal slot proper as the gear carrying it causes it to move round the aXis of said gear for allowing an unobstructed progression of the slider under the action of its spring.

2. A control mechanism for the delayed operation of camera shutters and the like comprising a socket, provided at its outer end with a longitudinal slot ending with a lateral recess, a slider provided with a longitudinal slot extending into a lateral recess at its outer end, said slider being 'rigid with said socket and a control member for the operation of the camera shutters vcarried by said slider, a body over which said socket is tted and provided with an open end for the passage of the control member, a clock-Work including an escapement carried by said body, a spring urging the slider back into its projecting operative position with reference to the body, an eccentric projection carried by one of the gears of the clockwork parallel to the axis thereof and adapted to engage the slot in the slider, to cooperate with the recess therein for damping the progression 0f the slider with reference to the body under the action of the spring and then to enter the longitudinal slot proper as the gear carrying it causes it to move round the axis of said gear for allowing an unobstructed .progression of the slider under the action of its spring, and a projection on the body engaging the slot in the socket for selectively locking it in its outer position with reference to the slider and allowing relative longitudinal movement between said slider and said socket.

3. A control mechanism for the delayed operation of camera shutters and the like comprising a socket, a slider provided with a longitudinal slot extending into a lateral recess at its outer end, said slider being rigid with said socket and a control member for the operation of the camera shutters carried by said slider, a body over which said socket is tted and provided with an open end for the passage of the control member, a clock-Work including an escapement carried by said body, a spring urging the slider back into its projecting operative position with reference to the body, an eccentric projection carried by one of the gears of the clock-work parallel to the axis thereof and adapted to engage the slot in the slider, to co-operate with the recess therein for damping the progression of the slider with reference to the body under the action of the spring and then to enter the longitudinal slot proper as the gear carrying it causes it to move round the axis of said gear for allowing an unvobstructed progression of the slider under the action of its spring and a hook secured to the outer end of the socket for clamping it to any desired support,

GEORGES ALBERT HENRI BUGEAUD.

REFERENCES CITED UNITED STATES PATENTS Number Name- Date Barnett May 29, 1917 

